Influence of Severe Plastic Deformation on the Structure and Properties of Al–Li–Cu–Mg–Zr–Sc–Zn Alloy

被引：0
作者：
L. I. Kaigorodova
D. Yu. Rasposienko
V. G. Pushin
V. P. Pilyugin
S. V. Smirnov
机构：
[1] Ural Branch,Mikheev Institute of Metal Physics
[2] Russian Academy of Sciences,Institute of Engineering Science
[3] Ural Branch,undefined
[4] Russian Academy of Sciences,undefined
来源：
Physics of Metals and Metallography | 2018年 / 119卷
关键词：
severe plastic deformation; high-pressure torsion; aging; recrystallization; decomposition of supersaturated solid solution; nanocrystalline structure; boundaries; phase; dislocations; vacancies; microhardness;
D O I：
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学科分类号：
摘要：
The structural and phase transformations in the Al–Li–Cu–Mg–Zr–Sc–Zn alloy have been studied by the electron microscopy after the aging for the maximum strength and in the nanostructured state after severe plastic deformation by high-pressure torsion. It has been shown that severe plastic deformation leads to the formation of a nanostructured state in the alloy, the nature of which is determined by the magnitude of deformation and the degree of completeness of the dynamic recrystallization. It has been established that deformation also causes a change in the phase composition of the alloy. The influence of the structural components of the severely deformed alloy on the level of mechanical properties, such as the hardness, plasticity, elastic modulus, and stiffness has been discussed.
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页码：161 / 168
页数：7
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